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https://dev.mysql.com/doc/refman/5.7/en/partitioning-limitations-functions.html
This section discusses limitations in MySQL Partitioning relating specifically to functions used in partitioning expressions. Each of these functions returns an integer only if it is passed an argument of an exact numeric type, such as one of the ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-linear-hash.html
CEILING(3.7004397181411) is 4, and V = POWER(2,4), which is 16.) Set N = F(column_list) & (V - 1). MySQL also supports linear hashing, which differs from regular hashing in that linear hashing utilizes a linear powers-of-two algorithm whereas ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-management.html
MySQL 5.7 provides a number of ways to modify partitioned tables. It is possible to add, drop, redefine, merge, or split existing partitions. All of these actions can be carried out using the partitioning extensions to the ALTER TABLE statement.
https://dev.mysql.com/doc/refman/5.7/en/partitioning.html
Note As of MySQL 5.7.17, the generic partitioning handler in the MySQL server is deprecated, and is removed in MySQL 8.0, when the storage engine used for a given table is expected to provide its own (“native”) partitioning handler. Use of ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-accounts-table.html
The accounts table contains a row for each account that has connected to the MySQL server. For each account, the table counts the current and total number of connections. To set the table size explicitly, set the performance_schema_accounts_size ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-cond-instances-table.html
The cond_instances table has these columns: NAME The instrument name associated with the condition. The cond_instances table lists all the conditions seen by the Performance Schema while the server executes. A condition is a synchronization ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-consumer-configurations.html
The consumer settings in the setup_consumers table form a hierarchy from higher levels to lower. The following discussion describes how consumers work, showing specific configurations and their effects as consumer settings are enabled progressively ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-consumer-filtering.html
Conversely, you can get detailed statements in events_statements_current without digests (the DIGEST and DIGEST_TEXT columns are NULL). To enable or disable a consumer, set its ENABLED value to YES or NO. If you disable a consumer, the server does ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-event-tables.html
For each event type, the _current, _history, and _history_long tables have the same columns. For wait, stage, statement, and transaction events, the Performance Schema can monitor and store current events. In addition, when events end, the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-events-stages-history-long-table.html
The events_stages_history_long table contains the N most recent stage events that have ended globally, across all threads. Stage events are not added to the table until they have ended. When the table becomes full, the oldest row is discarded when ...